Paper-making polluted water purifying installation

• Main Author: TIANMIN,CAI CAO
• Format: Patent
• Language: English
• Published: 29.03.2006
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The utility model discloses a papermaking polluted water purifying device, which comprises at least one purifying unit which comprises a casing provided with a polluted water inflow opening, a polluted water outflow opening, a cooling water inflow opening and a cooling water outflow opening. The utility model is characterized in that at least one layer of crevice membrane is arranged in the casing, one side of the crevice membrane is provided with a polluted water passage through which polluted water can flow, and the polluted water passage is communicated with the polluted water inflow opening and the polluted water outflow opening; the other side of the crevice membrane is provided with a cooling water passage through which the cooling water can flow, and the cooling water passage is communicated with the cooling water inflow opening and the cooling water outflow opening. The utility model has the advantage that the structure is simple, the papermaking polluted water can be effectively purified, most of the moisture can be recycled and the running cost is low. The utility model can particularly treat the pulping black liquor thoroughly, solve the problems that the serious discharged polluted water of papermaking exceeds the standard and deeply affect the Chinese papermaking industry.