Underground Sewerage Treatment Process

1. fundamental principles

       Pool material made with high and new technology, make the sewage treatment equipment of whole set to advanced technology, reasonable configuration, excellent performance, good corrosion resistance, convenient maintenance, beautiful appearance. Pool material according to different reactor in the form of anticorrosive prefabricated steel plate, special sealing material leak proof, this kind of prefabricated steel plate form a protective layer can not only prevent the corrosion of tank, and has the function of strong acid, strong alkali resistance. Short build period; Corrosion resistance is strong; The sewage plant expansion to less investment and put into production soon

2. Technological process:

 Regulating pool ­ - gas fugitive dust fall pool - YanYangChi - biological aerobic pool - the second pond - filter - water recycling pool

Process description:

The design of the equipment is mainly for domestic sewage and industrial organic wastewater treatment. The main processing method is to use the relatively mature contact oxidation pool biochemical treatment technology. Water quality design parameters according to the sewage water is 250 mg/L BOD5, effluent BOD5 calculation for 20 mg/L. At the beginning of a total of seven parts: pond; Anaerobic pool; Contact oxidation pool; The second pond; Pool disinfection, disinfection device; The sludge pool; The wind of computer room.

(1) The pond: at the beginning of the early pond for vertical flow sedimentation tank, sewage in the rising velocity of settling basin is 0.3 ~ 0.4 mm/SEC, settle sludge to sludge pools. SFW - 5 pond, early and the following equipment is not set.

(2) Anaerobic pool, anoxic pool Settings for nitrogen treatment, pool YDT stereo elastic filler is installed inside, as the carrier of denitrifying bacteria, nitrifying back into nitrate in liquid ammonia and acid state oxygen in under the action of denitrifying bacteria, reduction of nitrogen, achieve the goal of denitrification, anaerobic pool effective retention time was 2.5 ~ 3.5 h, dissolved oxygen control in 0.5 mg/L or less.

(3) Gravity to touch the contact oxidation pool: sewage for biochemical treatment, contact pool is divided into level 3, the residence time is 8 h, (enhanced equipment contact oxidation time up to 8 ~ 12 h) novel packing for elastic filler, conjunctiva, non-clogging, gas-water contact oxidation pool than about 15:1.

(4) After the second pond: biochemical sewage flows into the second pond, the second pond for vertical sedimentation precipitation, surface load as < 1.0 m3 / m2. J h, dredge up to the sludge pool. (5) Pool disinfection, disinfection device: sterilization tank according to the specification: "TJ14-74" standard for not less than 30 minutes, and if the hospital sewage, disinfection pool can increase the residence time to 1 ~ 1.5 h.

(6) Disinfection using solid chlorine tablets dissolve contact disinfection, sterilization device can be changed according to the size of the water yield is not following the dosage, achieve water add more medicine, less water less dosing, the purpose of the need to other disinfection devices can be made separately.

3. Key technology 

  The key to the high and new technology is:

   1, the overall design the reasonable structure of the reactor tank;

   2, prepare special anticorrosive coating process;

   3, advanced processing technology.

The main technical indicators and conditions

 Technique Data 

1, suitable for the situation of low investment, low cost and low energy consumption of air flotation - UASB hydrolysis - aerobic treatment process;

2, through the new technology, new materials and new construction technology will invest to a minimum.

3, through the use of advanced technology workers and advanced automatic control technology increase, decrease the cost of sewage treatment

technical requirements

  Strict and standardized operation and management.

Main equipment and operation management

1. The main equipment

       According to the requirement of the wastewater treatment process, to determine the specific requirement of equipment, general main equipment for the anaerobic USAB truss with aerobic SBR reactor.

2.Operation management

  This set of equipment operation is simple, easy to operate, as long as Ann normal operating procedures for operation and maintenan

3.Environmental benefit analysis

Integrated wastewater treatment reactors used in organic wastewater treatment compared with the other bioreactor, has the advantages of low construction investment, short construction period, the characteristics of flexible installation, improve the overall treatment efficiency of the wastewater.