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Method of processing laundry drain

Abstract

Purpose: To subject the laundry drain to flocculation precipitation treatment in the prior stage of an inverse osmotic treatment, and subject only the supernatant to the inverse osmotic treatment and the precipitate directly to the condensation treatment, thereby decreasing the frequency of exchange of the inverse osmotic membranes, and reducing the quantity of purifying water. Method: The laundry drain is supplied to a flocculation precipitation tank, and added and mixed with a flocculant and a neutralizing agent, thus being subjected to a flocculation precipitation treatment. The supernatant is transported to a circulation tank through a transportation pipe, and is subjected to an inverse osmotic treatment in inverse osmotic module through the circulation tank, a filter and a high tension pump, and then returned to the circulation tank. The supernatant is thus concentrated to a predetermined concentration by repeating such operations. On the other hand, the precipitate at the bottom part of the flocculation precipitation tank is supplied through the transportation pipe to an evaporator supply tank together with the concentrate from the drain circulation tank, and evaporated and concentrated in the evaporator.
Publication Date:
Sep 28, 1979
Product Type:
Patent
Report Number:
JP 54-125400; A
Reference Number:
AIX-11-562785; EDB-80-127009
Subject:
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; RADIOACTIVE WASTE PROCESSING; DECONTAMINATION; WATER TREATMENT; FLOCCULATION; LAUNDRIES; LIQUID WASTES; MEMBRANES; OSMOSIS; PERMEABILITY; PH VALUE; PRECIPITATION; RADIOACTIVE WASTES; VAPOR CONDENSATION; WASTE WATER; CLEANING; DIFFUSION; HYDROGEN COMPOUNDS; MANAGEMENT; MATERIALS; OXYGEN COMPOUNDS; PROCESSING; RADIOACTIVE MATERIALS; SEPARATION PROCESSES; WASTE MANAGEMENT; WASTE PROCESSING; WASTES; WATER; 052001* - Nuclear Fuels- Waste Processing
OSTI ID:
6818926
Country of Origin:
Japan
Language:
Japanese
Submitting Site:
INIS
Size:
Pages: 5
Announcement Date:

Citation Formats

Sugimoto, Y, Oda, A, Yusa, H, Kitamura, M, and Horiuchi, S. Method of processing laundry drain. Japan: N. p., 1979. Web.
Sugimoto, Y, Oda, A, Yusa, H, Kitamura, M, & Horiuchi, S. Method of processing laundry drain. Japan.
Sugimoto, Y, Oda, A, Yusa, H, Kitamura, M, and Horiuchi, S. 1979. "Method of processing laundry drain." Japan.
@misc{etde_6818926,
title = {Method of processing laundry drain}
author = {Sugimoto, Y, Oda, A, Yusa, H, Kitamura, M, and Horiuchi, S}
abstractNote = {Purpose: To subject the laundry drain to flocculation precipitation treatment in the prior stage of an inverse osmotic treatment, and subject only the supernatant to the inverse osmotic treatment and the precipitate directly to the condensation treatment, thereby decreasing the frequency of exchange of the inverse osmotic membranes, and reducing the quantity of purifying water. Method: The laundry drain is supplied to a flocculation precipitation tank, and added and mixed with a flocculant and a neutralizing agent, thus being subjected to a flocculation precipitation treatment. The supernatant is transported to a circulation tank through a transportation pipe, and is subjected to an inverse osmotic treatment in inverse osmotic module through the circulation tank, a filter and a high tension pump, and then returned to the circulation tank. The supernatant is thus concentrated to a predetermined concentration by repeating such operations. On the other hand, the precipitate at the bottom part of the flocculation precipitation tank is supplied through the transportation pipe to an evaporator supply tank together with the concentrate from the drain circulation tank, and evaporated and concentrated in the evaporator.}
place = {Japan}
year = {1979}
month = {Sep}
}