SYSTEM AND METHOD FOR MILL EFFLUENT BIOLOGICAL OXYGEN DEMAND (BOD) REDUCTION

A system and method of forming a molded pulp product that involves separately collecting， from a paper-making process， waste water containing short fibers at a first fiber consistency， waste water as dilution water containing fibers at a second fiber consistency that is lower than the first fiber consistency， and water containing long fibers， the long fibers having a length that is greater than a length of the short fibers， blending the waste water containing short fibers and the water containing long fibers to obtain a pulp slurry， and molding the pulp slurry into a molded pulp product at a pulp molding machine. In an embodiment， filtrate removed during the molding of the molded pulp product has a BOD measurement that is 95% less than a BOD measurement of the pulp slurry， where the BOD measurements are obtained using the EPA 405.1， SM5210B Test Method.

一种制备模塑纸浆产品的系统与方法，该方法包括从造纸工序中分别收集三类物料：第一纤维浓度下含短纤维的废水、纤维浓度低于第一纤维浓度的、用作稀释水的含纤维废水，以及含长纤维的水，其中长纤维的长度长于短纤维的长度；将含短纤维的废水与含长纤维的水混合以制得纸浆浆料，并通过纸浆成型机将该纸浆浆料成型为模塑纸浆产品。在一个实施例中，模塑纸浆产品成型过程中脱除的滤液的生化需氧量（Biochemical Oxygen Demand，BOD）值较纸浆浆料的生化需氧量值低95%，且该生化需氧量值采用EPA 405.1、SM5210B测试方法测得。