[record number] 301486
[record type] abstract
[limitation is used] home
[item year number] 0300220082
[achievement name] paper mill liquid waste handles a technology
[province city] Tianjin
[classify date] X520.5 X793.03
[keyword] pulp waste liquid, bai Shui, abandon water treatment, coagulation precipitates, garrulous coagulates agent, sedimentation basin, NKCSA precipitant
[achievement brief introduction]
3 kinds of liquid waste: The parameter before white water, middle water and evaporate boil black water treatment is as follows: The exterior before processing: White water shallow white (muddy) , palm of middle depth of water is gules, evaporate boils black water black; The PH before processing: Bai Shui 6, middle water 6, evaporate boils black water to be more than 14; The COD before processing: Bai Shui 645.12, middle water 2322.43, evaporate boils black water 69888; The chroma before processing: 15# of Bai Shui ＞ , ＜ 20# , 425# of middle water ＞ , evaporate boils 425# of black water ＞ . Handle the method of Bai Shui and middle water with NKCSA precipitant: Abandon Bai Shui's processing: If PH is between 6-7, can add NKCSA precipitant waste water by the chroma of 0.5‰ inside, after mixing even, via 4-8 hour quiet place, liquid waste clears can discharge (the result sees a table 2) . Sedimentary have sorption, the petty precipitation ion that becomes the new student is adsorptive, accelerate precipitation rate. Sedimentary accumulate a certain quantity of hind had put filter, filtrate from filter bottom eduction, sedimentary take away from upside. The processing of middle water: If PH is between 6-7, the chroma that presses NKCSA precipitant 1.2‰ adds waste water inside, after mixing even, via 4-8 hour quiet place, palm black turns into buff (the result sees a table 2) , press the Bai Shui after the middle water after processing and processing 1:1After mixing, can discharge. With NKCSA precipitant processing evaporate boils the method of black water: The precipitant that 80 litres of code name join to be NKCSB in black water is boiled in every tons of evaporate, after agitate, evaporate boils black water to turn to be black mud shape. Black mud is OK load one's writing with fancy phrases, volatilize in atmosphere moisture, avoided to emit into liquid waste aqueduct environment; After black mud classics filters, but filter goes out to constitute bulk about the nigger-brown liquid waste of 40 ％ . (Express 2) the parameter of the liquid waste after processing: The exterior: Bai Shui: White, crystal; Middle water: Buff, crystal; Evaporate boils black water: Black mud shape () of the nigger-brown after filtering; PH: Bai Shui 8-9; Middle water 8-9; Evaporate boils the) after black water 8-9(filters; COD: Bai Shui 36.56; Middle water 430.8; Evaporate boils the) after black water 23740(filters; Chroma: 5# of Bai Shui ＜ ; 65# of middle water ＞ , ＜ 70# ; Evaporate boils 425# of black water ＞ . Process the precipitant charge of liquid waste: Precipitant NKCSA and NKCSB are composite material, processing fee of Bai Shui is 0.15 yuan about / ton, the processing fee of middle water is 0.26 yuan / ton. Water treatment equipment: Sedimentation basin, water pump. This technology free is made over, free small try.
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