Tag:flocculant

№8|2011

POTABLE WATER SUPPLY

bbk 000000

UDC 628.16.065.2

Alekseeva L. P.

Influence of Conditions of Formation and Composition of Filter Wash Water on the Process of Their Treatment

Summary

Results of the research in filter wash water treatment at different water supply stations are presented. Studies conducted and pre-design technological investigations make it possible to establish that compositions and properties of wash water at various water supply stations vary significantly and depend on the quality of influent water which may vary according to the seasons of the year as well as the technology of its treatment (types and dozes of reagent, operation conditions and conditions of the treatment facilities). It is established, that the efficiency of reagent-free clarification of wash water of various types depends on the content of mineral substances in them. Depending on the type of wash water, flocculants as well as coagulants together with flocculants can be used for their advanced reagent treatment.

Key words

, , , , ,

 

№2|2011

WATER SUPPLY

bbk 000000

UDC 628.16.004.69

Valuyskikh I. V., Mamaev V. V., Zhagin S. V., Boldyrev Viacheslav Viktorovich, Smirnov V. P.

Introduction of Up-to-Date Technologies of Potable Water Treatment

Summary

The modern conception of water treatment has been realized at the pumping-filtration station of 250 ths m3/day output supplying potable water to the left-bank part of the city of Novosibirsk. The scheme of water treatment includes preliminary water ammonization, the supply of coagulant (aluminum oxychloride) and flocculant, preliminary chlorination, mixing in a mixer of instantaneous action, preliminary flocculation, clarification in horizontal settling tanks, filtration at high-rate filters, secondary chlorination, UV-disinfection. The use of several technologies and technical decisions in the scheme of water treatment aimed at the ensuring of epidemiological safety and high quality of water makes this scheme exclusively reliable and universal.

Key words

, , , , , , ,

 

№8|2014

DRINKING WATER SUPPLY

bbk 000000

UDC 628.161.3.001.891.53

Strelkov A. K., Egorova Yu. A., Bykova P. G.

Selection of most efficient chemicals for water treatment

Summary

The Saratovskoe water reservoir has been the main water source of the Samara public water supply. The municipal water treatment facilities have been built after typical projects and designed for clarification and disinfection of moderately polluted water. Lately sharp suspended solids reduction and organic pollution increase (mainly of natural origin) in the water source have been observed. During flood periods technogenic pollution (surfactants) is present, the concentration of manganese increases, phenol is found. At low water temperature, high color and permanganate value higher doses of chlorine and coagulant are required. Coagulation at low temperatures is inhibited which results in the concentration of residual aluminium and permanganate value exceeding the maximum permissible levels. Higher chlorine dosages cause higher concentrations of chloroorganics in water. Therefore a chemical for using during flood periods that will provide for the required quality of water shall be selected. The results of the laboratory studies of selecting the chemical type and optimum dosage for water purification from the Saratovskoe water reservoir during flood periods are presented. Eighteen coagulant trademarks manufactured by domestic and foreign producers were investigated. The optimum dosages of coagulant and flocculant were defined. From the coagulant samples presented two were selected that could provide for the maximum drinking water clarification at minimum levels of residual aluminium and permanganate value. The final choice can be made on the basis of the technical and economic calculations taking into account the chemical price, delivery cost and required water quality.

Key words

, , , , , , , ,

 

№5|2012

WASTEWATER SLUDGE TREATMENT

bbk 000000

UDC 628.336.429

Kriven' A. P.

Selecting the equipment for wastewater and industrial sludge dewatering

Summary

The basic process parameters when selecting dewatering equipment are as follows: capacity; water content of sludge fed for dewatering; water content of dewatered sludge; dry matter retention efficiency; suspended solids concentration in filtrate (centrate). The comparative analysis of the technologic and economic aspects of using the most popular equipment for wastewater sludge dewatering is presented. The specific features of using centrifuges, belt filter presses and screw dehydrators are considered. Screw dehydrators for wastewater sludge dewatering at small-scale treatment facilities are described.

Key words

, , , , , ,

 

№4|2011

WASTEWATER SLUDGE TREATMENT

bbk 000000

UDC 628.336.41

Pokhil Yu. N., Bagaev Yu. G., Ivanov N. A., Ivanov A. N.

Innovation Technology of Wastewater Sludge Dewatering at Sludge Beds

Summary

The technology of highly effective dewatering of wastewater sludge at sludge beds using the principally new flocculant «Сибфлок®» on the basis of polyethylene oxide and special facilities – wells for sludge water disposal is described. This technology has been tested at more than ten Vodokanals of Russia and Kazakhstan at facilities of 150–700 000 m3/day of wastewater capacity under the different climatic conditions. Sludge dewatering using the new technology makes it possible to obtain the sludge with moisture content of 70–75% and after predrying in a summer period – with moisture content of 40–60%. The technology is unified and can be easily included practically in any flow charts. Additional equipping of sludge beds needs minimal expenses. The sludge dewatered at sludge beds using the flocculant «Сибфлок®» get the properties inherent to natural soils, lend itself well to composting and other types of processing.

Key words

, , , , , ,

 

№4|2012

«TECHNOVOD–2012»

bbk 000000

UDC 628.16.066.1

Zhurba M. G., Govorova Zh. M., Gandurina L. V., Govorov O. B., Yelyukov M. V.

Intensification of low-turbidity colored water treatment in a sludge blanket clarifier (part 1)

Summary

The specific features of high colored low turbidity water treatment in clarifiers with sludge blanket during representative time periods with low temperatures and water alkalinity are considered by the example of the Vologda water treatment facilities. The results of investigating chemical pretreatment of water from the Vologa River and Koubenskoye Lake during flood periods with the use of various oxychloride and aluminium sulfate trademarks as well as cationic and anionic flocculants are presented. The advanced methods of enforcing water treatment process in a sludge blanket are covered. The results of studying a «clarifier-filter with floating media» combined system are presented.

Key words

, , , , ,

 

№5|2012

WATER AND WASTEWATER COMPANIES (VODOKANALS) IN RUSSIA

bbk 000000

UDC 628.16.066.1

Zhurba M. G., Govorova Zh. M., Govorov O. B., Yelyukov M. V., Chekryshov A. V.

Intensification of low-turbidity color water treatment in a sludge blanket clarifier (part 2)

Summary

The specific features of high color low turbidity water treatment in clarifiers with a sludge blanket during representative time periods with low temperatures and water alkalinity are considered by the example of the Vologda water treatment facilities. The advanced methods of water treatment process enhancement in a sludge blanket are covered. The results of studying a «clarifier-filter with floating media» combined system are presented. The implementation of the proposed measures at the existing water treatment facilities of the Northwest regions, Siberia and Far East will provide for the efficient operation of the clarifiers.

Key words

, , , , ,

 

№5|2016

ADVANCED EQUIPMENT

bbk 000000

UDC 628.321

Zhadan A. V., Kasatochkin A. S., Larionov S. Iu., Panteleev A. A., Riabchikov B. E., Shilov M. M.

Testing VTI-M pilot high-rate lamella clarifier with microsand

Summary

In order to test and adjust in pilot mode the technology of enhanced water coagulation a VTI-M pilot high-rate clarifier with microsand was designed. The installation with a capacity of up to 30 m3/h is designed for the purification of surface, storm and waste water. It is constructed in such a way that the purification process can be carried out either with recycling of generated sludge or with the use of fine-grained sandy weighting material. VTI-M clarifier provides for the sustainable water quality that fully meets the requirements to the quality of water supplied to ion exchange desalination.

Key words

, , , , , , ,

 

№2|2016

WASTEWATER TREATMENT

bbk 000000

UDC 628.316.12

Yavtoushenko M. V., Larionov S. Iu., Panteleev A. A., Riabchikov B. E., Shilov M. M., Kasatochkin A. S., Zhadan A. V.

Testing IKO-R enhanced coagulation pilot plant

Summary

An experimental plant with a capacity up to 20 m3/h was developed for enhanced coagulation of surface and waste water as well as storm water. The treatment process is based on sedimentation of inclusions together with coagulated flocs under the optimal conditions of chemical addition and mixing. To enhance the sedimentation process sludge recycling from the settling tank was provided that ensured the formation of big flocs. Pilot tests of the plant were carried out to evaluate the efficiency of removing suspended solids and phosphorus from the effluent during tertiary treatment at the Podolsk wastewater treatment facilities in the Moscow Area. The capacity of the plant during testing varied from 3 to 15 m3/h. At steady operation of the settling tank no sludge washout was observed. During longer tests the capacity was 8–10 m3/h; in terms of the cross section of the settling tank the specific capa­city (flow rate) was 5–7 m3/(m2·h). Time to reach the steady state conditions was 5–10 minutes. At that the efficiency of phosphorus removal was 80%, permanganate value was reduced by 54% and suspended solids concentration was reduced by 58%.

Key words

, , , , ,

 

№1|2013

WASTEWATER TREATMENT

bbk 000000

UDC 628.334.5

FESENKO L. N., Popov D. V., Koulikov N. I.

Investigating an advanced method of surface runoff treatment in the city of Sochi

Summary

The results of investigating storm water treatment technologies under the conditions of Sochi are presented. A pilot treatment plant is described, the operation of the basic units – lamella settler and filters – is considered. The kinetics of surface runoff suspended solids sedimentation is investigated. The performance characteristics of the lamella module during chemical sedimentation: downward clarified water flow rate in cavities, upward flow in plate spacing, and water surface loading were determined. The efficiency of using fibrous filter for storm water treatment was theoretically substantiated and studied. The service adhesive capacity of the filter was determined. The methods of the treatment unit regeneration are suggested.

Key words

, , , , , , , ,

 

№8|2016

DRINKING WATER SUPPLY

bbk 000000

UDC 628.16.027:628.543

Egorova Yu. A., Kichigin V. I., Polst'ianov S. N., Nesterenko O. I.

Study of the technologies of wash water treatment  from contact clarifiers

Summary

The results of the laboratory studies of twelve flocculant kinds used for wash water treatment from contact clarifiers are presented. The optimal dosages of flocculant were determined. Two of the flocculants studied were selected that could ensure the maximum degree of water clarification at the minimum concentration of residual aluminium, residual polyacrylamide and suspended solids in water. It was stated that the sludge generated during water clarification had 99.9% moisture content. It was proved that Flopam FO 4240 PWG and Маgnafloc LT-22S flocculants ensured good sedimentation of pollutants present in wash water. Possible use of chemical and chemical free filtration in «Fil’tr Polimernyi» manufactured by «Samenviro» LLC as well as of membrane filtration in UNA-620A hollow fiber module (based on Microza® pressure membranes) in a pilot plant rendered by «Pall Evrasia» LLC was considered.

Key words

, , , , , ,

 

№9-2|2011

POTABLE WATER SUPPLY

bbk 000000

UDC 628.161.3

Astrakhantsev D. V., Kirsanov A. A., Egorova Yu. A., Bykova P. G., Erchev V. N., Strelkov D. A., Zanina Zh. V.

Modernization of Chemical Workshop of the Pumping-Filter Station of Samara Using the Powdered Carbon Sorbent

Summary

Modernization of the chemical workshop carried out at one of unit of the pumping-filter station of Samara with 360 thousand m3/day output has made it possible to improve the reliability of water treatment. The flow chart includes the primary chlorination, dosing of powdery activated carbon into influent water, coagulant addition before the mixer, flocculant addition at the passage of water from the mixer, clarification in horizontal settling tanks, filtration in rapid filters, secondary chlorination. The use of powdered activated carbon in the water treatment scheme ensures the quality of potable water corresponding to specified requirements.

Key words

, , , , , ,

 

№08|2015

WASTEWATER SLUDGE TREATMENT

bbk 000000

UDC 628.336.429

Kriven' A. P., Ovcharova I. V.

JD Multi-Disk Dehydrator – an innovative solution  for sludge dewatering

Summary

«EKOTON» Industrial Group has been broadening the range of equipment for wastewater sludge dewatering. In addition to belt and chamber filter-presses, and screw dehydrators «EKOTON» Company in cooperation with TSURUMI PUMP, Japanese company, launched the licensed production of JD Series Multi-Disk Dehydrators. The unique design of the dehydrator precludes even a theoretical risk of working chamber clogging, whereas continuous self-cleaning of filtration pores with rotating disks during the operation of the unit provides for the filtrate discharge even when dewatering sludge containing fats and oils. The information on the design of JD Multi-Disk Dehydrator, the principle of operation of the dewatering facilities on the basis of this unit, the main advantages and diffe­rences compared to screw dehydrators is presented. The recommendations are given for the fields of domestic market application of the new equipment for dewatering wastewater sludge and industrial slurries of different origin.

Key words

, , , , , ,

 

№11|2014

WASTEWATER SLUDGE TREATMENT

bbk 000000

UDC 628.336.411

Ivanov A. N., Ivanova M. G.

Wastewater sludge dewatering with the use of «Sibfloc®» flocculant and special wells

Summary

The technology of high-efficient wastewater sludge dewatering on sludge beds with the use of brand new «Sibfloc®» flocculant made on the basis of polyethylene oxide and special slotted wells for the collection and removal of sludge water is described. The technology has been tested under various climatic conditions – from the Krasnoyarsk Area to the Krasnodar Area and introduced at the wastewater treatment facilities in Russia and Kazakhstan. The suggested technology when used on sludge beds provides for wastewater sludge dewatering to 68–75% moisture content; under the effect of «Sibfloc®» flocculant the sludge is structurized and readily dried to 40–45% moisture content after unloading from the sludge bed. The sludge generated during dewatering is suitable for any type of utilization – from direct use as soil conditioner for reclamation of dumps and solid waste landfills to processing into fertilizers and soil for forest plantation. Sludge not suitable for any utilization because of fast drying capability to any moisture content (from 60 to 8%) can be efficiently used in biogas generating plants or special furnaces either in its initial state or in the form of fuel bricks. Technical and economic performance and environmental effect of using the considered technology allow classifying it as a best available technology. Introducing the technology of wastewater sludge dewatering with the use of «Sibfloc®» flocculant provides for 4–7 times reduction of the required number of sludge beds, and improvement of sanitary and environmental situation at the treatment facilities and adjacent territories, including efficient odor control and unloading filled up sludge beds and sludge tanks.

Key words

, , , , , ,

 

№9|2014

DRINKING WATER SUPPLY

bbk 000000

UDC 628.16.052.2

Alekseeva L. P., Alekseev S. E., Kourova L. V.

Optimization of low polluted water purification process

Summary

The ways of enhancing water coagulation processes at the operating water treatment plants with the purpose of reducing chemical costs are considered. The results of studying the conditions of different coagulants and floculants use in water purification from low polluted sources by the example of the Irtysh River are presented. It was stated that during both summer-fall and winter periods the use of aluminium oxychloride coagulant in combination with organic coagulants was most efficient for Irtysh water treatment. The effect and optimal parameters of mixing chemicals with water in the mixing chamber and flocculation tank is shown. The optimal conditions of water mixing in the mixing chamber during the summer period provided for reducing the turbidity of clarified water and filtrate by 20 and 35%, respectively; whereas enhancing slow mixing in the flocculation tank – by 35 and 63%, respectively. Du­ring the fall period the effect of mixing conditions is even higher and allows reducing the chemical dosage applied minimum twofold while maintaining the qua­lity of treated water. In winter when water treatment at the plant is actually carried out in contact coagulation mode the represen­ted data show that the optimal conditions of rapid mixing water with coagulants in the mixing chamber provide for the treated water turbidity 3–5 times lower compared to the treatment under the existing conditions even at lower dosages. It is shown that for low turbidity and low colored water reducing the chemical dosage requires more rapid and long-lasting water mixing in flocculation tanks.

Key words

, , , ,

 

№4|2011

WASTEWATER SLUDGE TREATMENT

bbk 000000

UDC 628.336.42

Rublevskaya O. N., Krasnopeev A. L.

Experience in Introduction of Up-to-Date Technologies and Methods of Wastewater Sludge Treatment

Summary

New up-to-date technologies are needed for the solution of problems of utilization of sludge generated in the course of wastewater treatment. In St. Petersburg before the introduction of a burning technology the whole sludge preliminary dewatered at centrifuges was stored at special landfills. During the last fourteen years the whole quantity of sludge from the city’s sewerage treatment facilities is burnt. However the sludge accumulated at landfills during preceding years continues to influence negatively on environment. To eliminate this influence it was decided to process the sludge stored at landfills. With that end in view the advanced technology of sludge geotube dewatering has been chosen. Since the summer of 2009 the industrial application of this technology began at the Northern landfill.

Key words

, , , , ,

 

№3|2011

NEW TECHNOLOGIES AND EQUIPMENT

bbk 000000

UDC 628.336.57:628.162.52

Podkovyrov V. P., Arutyunova I. Yu., Yagunkov S. Yu., Zvyagin K. E., Dmitrieva Yu. S.

Operational Experience of a Shop of Mechanical Dewatering of Water Treatment Sludge at the Eastern Water Treatment Station

Summary

From January, 2010 the facilities for processing of water treatment sludge operate at the Eastern water treatment station of the Moscow State Unitary Enterprise Mosvodokanal (MSUE). The facilities include settling tank-sludge thickeners, drum thickeners, and centrifuges. The sludge treatment facilities operate round-the-clock. The operational experience shows that influent wastewater is characterized by significant irregularity during the day both by flow rate and by quality. In this connection there was the search for both optimal operating conditions of the facilities and optimal reagents making it possible to achieve the maximum efficiency of dewatering at preservation of acceptable quality of wastewater disposed.

Key words

, , , , ,

 

№8|2011

POTABLE WATER SUPPLY

bbk 000000

UDC 628.161:536.22

Fomina V. F.

Features of Coagulation of Low Turbid, Color Water of the Vychegda Under Conditions of Low Temperature

Summary

Results of the reagent treatment of low turbid and color water of the Vychegda for the purpose of selection of the efficient method of its clarification is presented. The process of coagulation is characterized by the formation of small, poorly settling flakes. Low temperatures of water require increasing the optimal doses of coagulant almost two times and the optimal doses of flocculant more than two times. It is shown, that the water discoloration up to 5–10 degrees and its maximal clarification are achieved in and around of optimal pH values. The empirical dependences of a coagulant’s dose on influent water color with due regard for its temperature are given. The efficiency of low temperature water treatment depends substantively on flocculation process, the duration of which multiplies several times during the periods of water's low temperatures. Under these circumstances the pressure flotation is the most reasonable and efficient method of clarification.

Key words

, , , , , , , ,

 

№4|2012

«TECHNOVOD–2012»

bbk 000000

UDC 628.16.065

Alekseeva L. P., Kourova L. V.

The specific features of using organic cationic flocculants in surface water treatment

Summary

The specific features of using high-molecular cationic flocculants for the treatment of water from surface sources characterized by low color, medium turbidity and low organics are considered. On basis of theoretical provisions and experimental results the expediency of using these flocculants as basic chemicals and in combination with mineral flocculants are shown; the conditions of using them at the water treatment plants are determined.

Key words

, , , , , , ,

 

№11|2010

WASTEWATER TREATMENT

bbk 000000

UDC 628.54

Shchetinin A. I., Kolesnik Yu. V., Ulchenko V. M., Kostin Yu. V., Esin M. A., Agafonkin V. V., Tomilov S. M., Maznyak Z. A.

Wastewater Treatment at Meat-Processing Enterprises

Summary

Issues of the wastewater treatment at meat-processing enterprises are described. The plan of the KonkordiyaLtd.’s wastewater treatment has been developed. For preliminary treatment, local treatment facilities which include a drum grate with an inclined dewatering screw, equalizing tank and physicochemical treatment unit on the basis of a reagent pressure flotation plant have been dsigned and constructed. Household sewage is supplied to an inlet distribution chamber, then to interlocked fine treatment grates and aerated horizontal sand-grease catchers. The mixture of household sewage treated mechanically and industrial wastewater treated locally is supplied to aeration tanks for biological treatment with removal of biogenic elements and then for aftertreatment and disinfection. Dewatering of all types of sludge is carried out at Ecopolymerbelt filter-presses using flocculants. Commissioning of local and wastewater biological treatment facilities as well as equipment for dewatering of sludge at belt filter-presses has been executed. The high wastewater treatment quality and sludge dewatering level have been achieved.

Key words

, , , , , ,

 
<< Start < Prev 1 2 Next > End >>
Page 1 of 2

vstmag engfree 200x100 2

mvkniipr ru

Российская ассоциация водоснабжения и водоотведения

Конференция итог

ecw20 200 300

VAK2