SU245672A1 - The method of wastewater treatment sulfate cellulose production - Google Patents

Description

The invention of otgositschz to oGjiacTE oas-gy Ky wastewater syd sulfate cellulose production,

A well-known way ochkothy sto-shyk. water C5 "cattledolous-losing Szgegeo. It is in the neutralization of the och; schaemy, sinks with calcium oxides hydrate. The degree of bespkstki drains while low.

The proposed method is drunk from the known treatment of effluents with calcium carbonate hydrate-li-si to pH 12-13; subsequent; g potassium permanganate in the amount of 10-30 ml / l of n carbon; waste disposal, which provides 100% - 5th wastewater treatment and gives Vozmszhnst not to use them once in a closed cycle.

Approx. The suprafatz sewage water: industrial production, dark brown, specific strong apech and high suspended matter content (429 mg / l and organic matter (97 mg / l)) are supplied to four-chamber circulating containers 2; Calcium oxx to reach 51b,

equal to 12.1. As a result, 70% of a high olecu. Precipitates coe / Ui -; - 1EE1: s are precipitated. dissolved in stock manganate precipitate; removing manganese from the solution,:;: 1nen 2n% of all x-rtr molecules to compounds not adsorbed by lime.

When treating Ca effluent (O1-1) to reach pH 12, D and viedeky with clarified SG7KI 0.5 ml of potassium permanganate per 100m of runoff, the precipitate is released. When treating runoff Oa (OH) „-i- KON to achieve pH 14

ts.

and 7.0 ml of potassium parmaganate per 100 ml of sediment flow is not introduced into the clarified wastewater

 Comparative characteristics of sewage treatment from high ON ONECULL. soydnecnea in prxutch7 .-., - vtsn of permanganate and Ca (OH) ,, (and without Heioj are given in Table 1,

Spreadsheets

Stock is clarified

Thus, pretreatment of the effluent with lime is an indispensable condition for the effective action of permanganate to clean the effluent; and the permanganate, in turn, contributes

Zhidachevsky

After treatment with potassium permanganate, the effluent separated from the precipitate is subjected to carbonization, which ensures the precipitation of Ca, Mg, Fe, and Mrv ions and the precipitation of sulfate ions and organic substances left in solution after previous operations. As a result of carbon dioxide treatment, colored high-molecular compounds are completely removed from the effluent.

the most complete removal of high-grade compounds from wastewater.

The effect of lakkan permanganate on the degree of sewage purification of DT of high molecular weight compounds is table. 2

table 2

and the color of purified water drops to O (see Table 2). The amount of suspended matter in the treated wastewater is almost equal to the O. of the treated wastewater with calcium oxides with calcium hydroxide, characterized in that with a degree of purification, the treatment with calcium oxide hydrate leads to reaching Mj-1 Mu "about. . followed by the entry - -. clarified effluent of permanganate in the amount of 10-ZO ml / l and harbonization of the effluent.